Burner apparatus



Dec. 15, 1931. w, 3, 115 1,837,030

BURNER APPARATUS Filed Nov. 18 1927 2 Shee ts-Sheet 1 avwwntoz M1181" (fElZe Dec. 15, 1931.

w. c. ELZE 1,837,030

BURNER APPARATUS Filed Nov. 18. 1927 2 Sheets-Sheet 2 gum/Ate;

Patented I Dec. 15, 1931 UNITED STATES PATENT OFFICE WALTER O. m FOREST KILLS, NEW YORK, ASSIGNOB TO HAUOK KANUFAGD'UD- DIG COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION 01' NEW YORK 3mm arranarus Application filed November 18, 1827. Serial No. 284,109.

The invention relates to burner apparatus designed to utilize a liquid fuel and adapted more particularly to the removal of snow and ice from switches; the destruction of vegetation, as weeds, and extermination of insect pests and their larvae and eggs; also, as thawing outfits for hoppers of freight cars and for dumping mechanism, and in terminal yards for interlocking plates, cranks, throw m rods, etc.

It has for its object to provide acne-man outfit of this type which may conveniently be manipulated, as Well as being readily transportable. A further object of the inie vention resides in the provision of means whereby a flat fan-shaped flame will be delivered from the burner and maintained for an appreciable distance in the burning zone;

and be readily directed to the surface over an which the burner apparatus is moved for destruction of the matter in its path. The

invention contemplates, also, a novel construction whereby the apparatus may readily be guided over and follow the contour of a at surface in the operation of applying the flame. Further features of the invention reside in the provision of a windshield which is conveniently removable to admit of access to the nozzle member of the burner apparatus an so that said member may readily be replaced or repaired, if necessary. A still further obj ect of the invention resides in the mountmg of portions of the burner apparatus to enable regulation of the length of flame to the desired degree when initially setting the burner.

In carrying out the invention, use is made of a sled member preferably rigidly secured to the fuel supply element, the latter terminating in an angularly disposed handle portion suitable for manually movin over the ground the burner apparatus carried on the said sled portion thereof. The fuel supplying member, furthermore, includes a preheatin coil or like portion at the outer end of the urner apparatus suitable for preliminarily heating and gasifying the liquid fuel prior to its delivery to the nozzle, while the latter is also of novel construction to deliver the gas or vaporized fuel issuing therefrom in a substantially flattened and fan-shaped form The same is then received by a substant ally elliptical throat member mounted w th n a corresponding surroundin casing within which partial combustion o the vaporized fuel occurs.

The nature of the invention, however, will best be understood when described in connefitifin with the accompanying drawings, in w 1c Fig. 1 shows in side elevation the novel,

burner apparatus.

fFlg. 2 is an enlarged front elevation there- 0 Fig. 3 is an enlarged plan view; and Fig. 4 is an enlarged side elevation, partly in longitudmal section and with portions broken away.

5 is a detail fragmentary longitudinal section of the nozzle plug.

Referring to the drawings, 10 designates a suitable element constituted preferably by a portion of the fuel supply pipe and horizontally disposed, to Wl'llCll is attached, preferably rigidly, and positioned beneath the same, a sled or like member 11 adapted to rest on the ground or other surface 12 over which the burner apparatus is to be moved in applying it for the various purposes in view. The said sled member to this end may be provided with a pair of runners 13 and ntermediate shell 14, the same affording an ignition receptacle, and both shell and runners being more or less rounded at the bottom to readily and smoothly move over surfaces of varying contour as met with in the application of the burner apparatus, the nec essary power for eflectin the movement of sa1d apparatus over a sur ace being manually applied through a handle member 15 constituted by the upper portion of the pipe introducing the liquid fuel to the burner apparatus. This handle portion may be inclined at a suitable angle to conveniently push the entire apparatus along a surface. A control valve 16 is included in the fuel line as at the upper portion of said handle member which is connected, for example, through a hose connection 17 with a suitable source of fuel supply or tank therefor (not shown) or otherwise transported to follow the mo-.

tion of the burner apparatus.

' The latter comprises a casing 20, preferably of elliptical section, for enclosing a worm or like preheating device 21 which is an extension of the intermediate portion through which the incoming fuel travels, said coil being located substantially at the outer end of the casing 20. Through a rearwardly directed pipe 22 from said coil, the heated and partly gasified fuel flows to the rear portion of said casing 20, pipe 22 terminating at an axially disposed nozzle member 23 which may consist of a plug screwed therein and having a plurality of apertures 24 horizontally disposed in a common plane, as indicated more particularly in Figs. 2 and 5 of the drawings. In order better to spread the issuing jets, a number of the apertures may be located therein at an angle to the longitudinal axis of the nozzle member, for example, the two apertures upon either side of the central one-all radiating from a common center and providing thereby a more or less flattened and fan-shaped jet.

Said nozzle, moreover, discharges into an open-ended substantially elliptical throat member 25 positioned somewhat beyond the 36 nozzle apertures 2a to assist developing and maintaining a that form of flame when the fuel issuing from the said apertures ignites, the said surrounding throat member communicating, also, at its rear portion freeiy with the atmosphere to permit air for the primary combustion of the fuel to be drawn inwardly by the issuing spray as well as by the subsequent combustion thereof in the casing. Moreover, the throat member is secured to the outermost casing 20 which latter in turn is adjustably carried on the fuel pipe portion 10 as through a sleeve 26, so that the entire assembly may be set along same and fixed in any desired position as by means of a set screw 27. Further air admission openings 28 are provided in the rear wall of the casing 20 as well as through the said casing at its peripheral portion immediately surrounding the throat member 25.

By the hereinbefore described arrangement, ample air for supporting the combus tion of the vaporized fuel will be afforded, the fuel as well being preliminarily heated to effect more eflicient combustion in the resulting flame. The point of partial combustion thereof, occurring within casing 20, is more or less determined by the positions of the nozzle and throat members relatively to each other, the position of said throat member influencing also the length of the ultimate flame beyond the mouth of the burner apparatus. The said throat member is generally so positioned that the initial combustion zone will begin approximately at the innermost convolution of the preheating coil 21,

or at least not to any extent behind the same, so that most effective preheatin will be attained and undue heating of t e shell behind said coil obviated.

In regulating the flame, it is to be noted that it should initially be formed behind the outlet or mouth of the burner apparatus an extent suflicient to allow ample time for it to assume the flattened form; and it will be appreciated that the inward position at which the flame begins controls, also, the distance beyond the mouth of the burner apparatus to which the flame maintains its shape, and that both the throat member and outermost surrounding casing are effective in maintaining the desired flattened form thereof. This form has been found most eflective in providing for a cutting action as well as burning; and by means ofrocking the sled carrier, it is possible to direct effectively said flame toward the object to be destroyed.

To guard against the effect of a strong breeze or other disturbing atmospheric influences, it is preferred to equip the said burner apparatus along one side with a. suitable shield 30 which may be secured adjacent the nozzle member. A means of convenient attachment is indicated in the drawings, the said shield 30 being removably fastened to a bracket 31 extending rearwardly from the shell 20 and being further secured by a rearwardly directed arm 32 terminating in a sleeve 33 slidable on the handle portion 15 and adapted to be rigidly secured thereto.

In starting the burner apparatus, oil-satu- 10% rated waste may be placed in the interior of the shell i l and ignited the bottom of casing 29 being cut away or provided with an opening 3% to admit of access to the interior of the shell.

1 claim 1. Flame projecting apparatus operating with liquid fuel, comprising a fuel supply pipe aflording an inclined handle-constituting portion, an outer coiled portion termi- 11c nating in an inner fuel delivery end, and an intermediate horizontal portion; a casing surrounding the coiled portion and the inner wall thereof being provided with an opening through which fuel is discharged into 115 said casing, and the latter being provided also with a bottom opening; and a hollow sled member secured to the said intermediate portion beneath the bottom opening of said casing to receive igniting material and solely 12c supporting the entire apparatus and enabling it to be moved, through application of for e to said handle-constituting portion, freely over a surface and to be also tiltable thereby for directing the projected flame. 125

2. Flame projecting apparatus operating with liquid fuel, comprising a fuel supply pipe affording an inclined handle-constituting portion, an outer coiled portion terminating in an inner fuel delivery end, and an 136 intermediate horizontal portion; a casing surroundin the coiled portion and the inner wall thereo being provided with an opening through which fuel is discharged into sai casing, and the latter being provided also with a bottom openin a hollow sled member secured to the sai intermediate portion beneath the bottom opening of said casing to receive igniting material and solel supporting the entire apparatus and ena ling it to be moved, through application of force to said handle-constituting portion, freel over a surface and to be also tiltable there y for directing the pro'ected flame; and a shield disposed at one si e of the apparatus between the inner end of the casing and the handle.

In testimony whereof I aflix my signature.

' WALTER O. ELZE. 

